题目内容
一个物体放在斜面上,当斜面的倾角逐渐增大而物体仍静止在斜面上时,下列说法正确的是:
A.重力与支持力的合力逐渐增大 |
B.重力与静摩擦力的合力逐渐增大 |
C.支持力与静摩擦力的合力逐渐增大 |
D.重力、支持力、静摩擦力的合力逐渐增大 |
A
试题分析:物体静止在斜面上,受到重力
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825002638314316.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825002638330357.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825002638345304.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825002638361604.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825002638361297.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825002638345304.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825002638392642.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825002638361297.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825002638330357.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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题目内容
A.重力与支持力的合力逐渐增大 |
B.重力与静摩擦力的合力逐渐增大 |
C.支持力与静摩擦力的合力逐渐增大 |
D.重力、支持力、静摩擦力的合力逐渐增大 |